2018 Cavan Intermediate Football Championship

The 2018 Cavan Intermediate Football Championship was the 54th edition of Cavan GAA's premier Gaelic football tournament for intermediate graded clubs in County Cavan, Ireland. The tournament consists of 14 teams, with the winner representing Cavan in the Ulster Intermediate Club Football Championship.

The championship starts with a league stage and then progresses to a knock out stage.

The draw for the group stages of the championship were made on 30 April 2018.

Mullahoran won the championship, beating Cuchulainns in the final.

Team Changes
The following teams have changed division since the 2017 championship season.

To Championship
Promoted from 2017 Cavan Junior Football Championship Relegated from 2017 Cavan Senior Football Championship
 * Colours of Meath GAA.svg Ballymachugh (Junior Champions)
 * Colours of Cavan.svg Arva
 * Colours of Waterford.svg Cuchulainns
 * Colours of Tipperary GAA.svg Mullahoran

From Championship
Promoted to 2018 Cavan Senior Football Championship Relegated to 2018 Cavan Junior Football Championship
 * Colours of Donegal GAA.svg Shercock (Intermediate Champions)
 * Colours of Galway.svg Denn
 * Colours of Limerick.svg Drumlane
 * Colours of Meath GAA.svg Killinkere

League stage
All 14 teams enter the competition at this stage. A random draw determines which teams face each other in each of the four rounds. No team can meet each other twice in the group stage. The top 8 teams go into a seeded draw for the quarter-finals while the bottom 6 teams will enter a Relegation Playoff.

Relegation play-offs
The teams placed 8-14 in the league phase will play off against each other. The 3 winners will maintain their intermediate status for 2019. One loser will go straight to a relegation final while the other 2 losers will face off in a relegation semi-final. The ultimate loser will be relegated to the 2019 Junior Championship.